| article html file updated | 5 February 2020 15:15 CET | Update | https://www.mdpi.com/1424-8247/3/8/2661 |
| article html file updated | 19 September 2019 00:33 CEST | Update | N/A |
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| article xml file uploaded | 5 June 2014 09:32 CEST | Original file | https://www.mdpi.com/1424-8247/3/8/2661/xml |
